haeeison johnson



J. H. JOHNSON. HOISTING AND 'LOWBRING APPARATUS.

120.261.722. Patented July 25, 1882.

ATTORNEY,

N. PETERS. PhomLiliwgrapnm'.l wanhhgton. ILC- nately elevated to each end of the'beain.

UNITED STATES PATENT OEEIOE.

J. HARRISON JOHNSON, OF WASHINGTON, DISTRICT OF COLUMBIA.

HOISTING AND LOWERING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 261,722, dated July 2.5, V1882.

Application tiled May 4,1882. (No model.)

To all whom it may concern:

Be it known that I, J. HARRISON J OHNsON,

a citizen of the United States of America., re-

siding at Washington, in the District of Columbia, have invented certain new and useful Improvements in Hoisting and Lowering Apparatus,of which the followingisa specification, reference being had therein to the accompanying drawings.

This invention relates to balance-beams or tackle-separators such as are used in hoisting or lowering ships7 cargoes or any merchandise or weights.

Heretofore balance-beams for double hoisting-tackle have consisted ot' a straight bar or rod having the guys and hoisting-tackle arranged at each end g but this form of beam oocasions many disadvantages, principal among which are the continual entangling or fouling of the hoisting-lines and the inconvenience ot' reaching over for the loads, which are alter- To obviate these disadvantages is the object of my invention; and to this end it consists in certain improvements in the construction and operation of the saine.

In the drawings, Figure l is a vertical sectional view of a vessel equipped with my improved hoisting-tackle, and Fig. 2 is an end View of the latter.

Referring by letter to the drawings, A designates the beam, which is of right-angular form, with two arms, B B.

G is a bail, the two straps ot' which, D l), embrace the beam at'the vertex ot' the angle, at which point the bail is provided with. a transverse pin or bolt, E, which passes through both the bail and the beam and forms the pivot on which the latter turns. At its top the ball restsn the apex or lower point of a heartshaped ring, F.

1n practice the beam is suspended over the hatch of the vessel by divergent guys G G, extending from the masts and hooked or otherwise secured at their lower ends to the auricles of the ring F.

At the ends of the arms B B the pulleyblocks H H are secured by beams hooked over rings I, swinging in the end of the arms B B, Or in any other suitable manner, and over the pulleys pass the chains or ropes J J for hoisting or lowering the cargo. These ropes operate alternately, so that when one is ascending the other descends, this movement being preferably effected by windin g their operating ends in different directions around a rotary drum (not shown) driven by steam or other power.

The Operation and advantages of my in ven- 1. The herein-described balance-beam, of

right-angular form, adapted to turn at the vertex of the angle, so that the arm of the beam carrying the weight will assume a pendent position, while the other arm is thrown out horizontally, as set forth, and for the purpose specified.

2. The herein-described right-angular balance-beam, pivoted at the vertex of the angle, and provided with hoistingand lowering tackle at each end, its arms being adapted to alternately assume a pendent position, whereby the load is landed in the same vertical plane, as set forth.

3. The combination, with the right-angular beam, pivoted at the vertex of the angle, and the heart-shaped ring, of the supporting-guys, secured at their lower ends to the auricles ot' the heart-shaped ring, as set forth.

4. The combina-tion, with the right-angular balancebeam, pivoted at the vertex ot' the angle in a bail, ot' the heart-shaped ring, in the apex or lower point of which rests the said bail, as set forth.

5. The combination, with the right-angular beam, pivoted at the veitex ofthe angle and provided with rings swinging on the ends Ot' its arms, of the hoisting and lowering tackle, the blocks of which are hooked or otherwise secured to the said swinging rings, as set forth.

In testimony whereof I aiiix my signature in presence of two witnesses.

J. HARRISON JOHNSON.

Witnesses:

J. 1t.L1TTELL, O. T. THOMPSON.

IOC 

